The Humminbird HELIX Fishfinder is a worthy companion for any angling expedition thanks to easy-to-understand design and all-around performance. Reliable soft-key controls allow access to a user-friendly operating system. Dual Spectrum CHIRP easily switches from see-everything Wide Mode to more precise Narrow Mode for enhancing a single area of interest. This MEGA DI-enhanced HELIX includes MEGA Down Imaging+ for unprecedented underwater clarity, with coverage extending 200 feet below your boat with up to 3X more fish-finding detail than standard Down Imaging sonar. 9 inch high-definition display with 1024x600 pixel resolution Dual Spectrum CHIRP Sonar for clear views of fish and fish-holding structure, easily switches between wide or narrow viewing modes MEGA Down Imaging+ for unprecedented underwater clarity, with coverage extending 200' below your boat Low-Q CHIRP Transducer AutoChart Live creates real-time maps of fishing spots, including depth, bottom hardness and vegetation. Records up to 8 hours of route information Built in GPS and Humminbird Basemap shows underwater terrain and surrounding points of interest Compatible with premium chart options such as LakeMaster, CoastMaster and Navionics High-speed Ethernet and Bluetooth-enabled NMEA 2000 networking One-Boat Network seamlessly integrates with other Humminbird, Minn Kota and Cannon products Includes mounting hardware, power cable, and gimbal mounting bracket